Here’s figure shows a design circuit for CMOS piezo transducer buzzer circuit;
A CMOS gate and transistor buffer can be used as an effective driver for a piezoelectric or piezoceramic transducer. This circuit is powered by 5 VDC. You can change piezoelectric transducer sound changing R2 and C1 values. PIN A connected to +5V and PIN B connected to Q1 collector.
PARTS LIST
R1 1MΩ
R2 560kΩ
R3 18kΩ
R4 1kΩ
C1 1000pF
Q1 2N2222
ICa And ICb CD4011
S1 Single Pole Double Throw
Switch PIEZO Piezo Element
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